2756661 has 8 divisors (see below), whose sum is σ = 3684000. Its totient is φ = 1833552.

The previous prime is 2756659. The next prime is 2756671. The reversal of 2756661 is 1666572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2756661 - 2¹ = 2756659 is a prime.

It is a Curzon number.

2756661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2756671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (460500).

2^2756661 is an apocalyptic number.

It is an amenable number.

2756661 is a deficient number, since it is larger than the sum of its proper divisors (927339).

2756661 is a wasteful number, since it uses less digits than its factorization.

2756661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 15120, while the sum is 33.

The square root of 2756661 is about 1660.3195475570. The cubic root of 2756661 is about 140.2149928038.

The spelling of 2756661 in words is "two million, seven hundred fifty-six thousand, six hundred sixty-one".